On Tue, Jan 01, 2002 at 07:03:52PM -0800, W.Xato wrote:
> Frieder, Thanks for the test results. I resized all of
> them and overlaid them onto the PhotoDo graphs for
> kicks. It was like they were almost totally different
> lens. Maybe there is more variability from lens to
> lens than one would think. I used to have three 28/2.8
> Zuikos and never liked any of them. I use my 28/2 now
> but still not 100% happy.
>
> Warren
To show this was exactly my intention, when why I made this page.
I wouldn`t even blame sample variation for this differences.
My guess that already hitting different parts (measure points) of one s
ample would lead to different locking graphs.
Then there is the influence of the testing area. I´ve also read
in a book that slight differences in focusing also have a
huge impact (best sharpness vs. best contrast). The light source ....
Altough the graphs look very different, I´d say, despite the
photodo results, that they were on pair.
Frieder Faig
>
> --- frieder.faig@xxxxxxxxxxxxxxxxxxxxxxxxx wrote:
> > Hi everybody,
> >
> > I know there`s alredy been enough talk about
> > photodo-MTF values.
> > Because of the low score of ouer well regarded
> > Zuiko 28mm F2,
> > I want to share other MTF-test results of this lens
> > with you.
> > So I?ve scanned the tests, and made a new page on my
> > website.
> >
> > If interested you might see the scans at this url:
> >
> >
> http://studweb.studserv.uni-stuttgart.de/studweb/users/mas/mas12462/OM/MTF/Zuiko-2-28.html
> >
> > Does this work on new email-readers:
> > <p><a
> >
> href="http://studweb.studserv.uni-stuttgart.de/studweb/users/mas/mas12462/OM/MTF/Zuiko-2-28.html";>Link
> > to 28mm Test</a><p>
> >
> > Just to show that a test-result might depend on a
> > lot of unknown impact.
> >
> > Frieder Faig
> >
> > < This message was delivered via the Olympus Mailing
> > List >
> > < For questions,
> > mailto:owner-olympus@xxxxxxxxxxxxxxx >
> > < Web Page:
> > http://Zuiko.sls.bc.ca/swright/olympuslist.html >
> >
>
>
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